This thread is designed to answer the most common questions about the different GLOCK training model pistols. The pistols below are mine. There are different variations and generations, like all other models. We will start with the "T" models. The most common is the G17T. The G17T comes in two calibers; the 9mmFX (more commonly known as "simunitions") and the 7.8x21AC. The 9mmFX is a center fire cartridge and is the most common of the G17T. The 7.8x21AC is an air compressed cartridge. GLOCK says it exists, but to this date I have never seen one nor even found a picture of one. In addition to the G17T, I have seen pictures of a G19T, so other "T" models may exist. The "T" models are considered real firearms, thus, all federal, state and local laws apply. They are legal to own (depending on your jurisdiction), but are available from GLOCK to LE only. They do pop up for sale from time to time in various places. This is the G17T. Obviously, you can see that the "T" models are blue. This is the left side of the slide, denoting that it is a G17T and is chambered in 9mmFX. This is the right side of the slide, warning you that the pistol is designed for training. All of the "T" models get a serial prefix of "T" followed by numbers. The "T" prefix is reserved for "T" models only and is not found on any other model. Interestingly, this is a 3rd Generation frame, but the "T" has yet to get the third pin. This is the muzzle of the 9mmFX barrel. You can see how it is offset to the top.